WATCH the short video tape if you get a Foodsaver!
VB knows his machine well: FREEZE the item for an hr before you seal it and the results are MUCH better!
I'ved use my Foodsaver (base model - refurbed for around $100) for a few yrs. Great product. Hate paying for the bags since my wife cuts the tops crooked and got tired of having laying around so she throws them out on me. Original Tilia/FS bags work the best. I tried some others so far it has been a waste of $.
Careful of sharp bones (pork chops) since they can puncture the bags when you bang them around in a chest freezer.
I had some OLD venison (3 yrs + easy) over the summer that got missed before and figured I would try it anyway - still was perfectly fine on the grill.